DIY bike chain

How to remove a bicycle chain without a lock

First, place the chain closer to you so that it is convenient to remove it after opening and start a new analogue on the stars. To do this, simply move the rear derailleur to the extreme position (smallest sprocket), and align the front derailleur with the third gear gear (largest sprocket).

Squeezing a pin out of a link is much easier than pushing it back in. Select one of the constituent elements of the chain and extrude the axis in any of the following ways:

  • Tapping with a hammer through a knitting needle or thin stud.
  • Squeezing with a hard tip fixed on the chain squeeze bolt.

bike, chain

Important! When tapping or pressing out, the back plate of the link must rest against something. For example, a special rib is provided for this in the squeezing device. Wielding a knitting needle and a hammer, the bicycle chain can be placed on a metal substrate (for example, a rail, a weight) or a hard stone, but so that the pin has where to go.

It is more convenient to squeeze out at the lower level. After disconnecting, it is easier to remove the chain at idle when the pedals are spinning in the opposite direction.

For your information. Do not fully press out the pin. It is very difficult to insert it into the outer plate. If you do not feel the position, proceed in steps: rotate the handle of the squeeze bolt, remove it, assess whether it is already possible to open the link. If yes, then the squeezing is considered over, and if not, put the squeezing device back on and repeat the cycle of actions.

How to shorten the chain

Usually a fresh chain is slightly longer than even a tired product. If you put it down without shortening, the position of the rear derailleur will not be correct. The quality of gear shifting suffers from this.

The easiest way to calculate the correct size is to compare the lengths of the old and new chain. It is not necessary to use a tape measure, just put them next to each other. Having combined both ends on one side, on the other we will see a discrepancy in dimensions. Excess links are extruded according to the already outlined method, taking into account the recommendation for incomplete removal of the axis from the hole.

Attention! When removing unnecessary links, follow the logic of their connection: the outer plates are pushed onto the inner ones. The outer plates will not sit on similar outer ones. Consider the design of the suspension: on double suspensions, the length of the chain should be sufficient in the position of full compression of the shock absorber.

Removing the lock

According to the technology of changing the chain on a bicycle at speeds, the detachable link is disconnected with special pliers. In fact, you can take in the area of ​​the lock with both hands (preferably with gloves) and pull the ends of the chain to each other.

How to change the chain without a lock on a bike with shifting gears

In the absence of a lock, the technology for replacing the chain is reduced to three operations:

  • Pressing the pin out of any link.
  • Shortening a new chain.
  • Positioning and pressing in the axle on a new bicycle chain.

How to replace a worn out chain with a lock on a speed bike

The technology is similar to the technique of changing a bicycle chain without a lock: remove the old one, shorten the new one and put it on. And we can say that here you cannot do without squeezing. extra links need to be removed with something.

Although here you can omit the recommendation about the incomplete pressing out of the pin. in the case of using the lock, it just needs to be completely removed. And then the alternative works 100%: the hammer and the knitting needle do their job, but you don’t need to press in anything.

Attention! When removing unnecessary links, see how the lock is installed: both ends must end with inner plates

Lock / not lock

So, the task in business, how to change a worn chain on a bicycle, is to find out if there is a lock. It is difficult to determine this on a dirty chain, so clean it. It does not have to be cleaned in full accordance with the routine procedure for removing old grease from the chain.

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It is enough to brush off the main layer of dirt from the side plates and turn the pedals in the opposite direction. The shape of the detachable link is noticeably different from others, and immediately catches the eye. In more detail, its design can be studied from the photo.

How to install a new bike chain

Let’s assume that all the technology requirements are how to choose a chain for a high-speed bike. successfully completed. Those. in front of you is a detail that fits the width of the rear and front stars and you just have to put it on:

  • Position the product so that the extruded pin is closer to you.
  • Run the chain over the large sprocket in the idle direction (reverse drive pedaling) through the front derailleur.

This DIY Bike Chain Spinner is a Fun Way to Recycle Your Old Bike Chain

  • Put the chain on the cassette and go around the rollers of the switches according to the diagram shown in the figure.
  • Press in the pin using a squeeze.

For your information. Pressing the link axis can only be squeezed. When pressing in, ask an assistant or fix the rear derailleur with a piece of wire so that the chain sags on the lower tier. This practically eliminates the risk of damaging the opposite plate.

At the crossroads of two technologies: methods of replacing a worn chain on a bicycle at speeds

The main purpose of the procedure is to disengage the old chain and connect the new one together. Before doing anything, check how the chain is engaged now. It either represents a single whole, or has a detachable link (lock) in its design. This is important, since the type of fastening determines the list of required tools and, in fact, the maintenance method.

Second step

Next, you need to prepare a fabric cover. When creating it, various types of materials can be used, but it is better to choose a water-repellent or breathable option (this is necessary so that the chain under the cover does not rust). It is also desirable for the fabric to stretch. In this case, the cover is sewn exactly according to the thickness of the chain and a few centimeters shorter (the stretching fabric will save you from knocking the chain during travel). If the material is not capable of strong stretching, the cover should be made a little wider. The main thing is that it does not hinder the movement of the chain. Also, some types of fabric require processing so that the edge does not fray. When the cover is ready, you can put it on the chain.

Advantages and disadvantages

Like any other anti-theft device, a homemade bike lock has its pros and cons. Its main advantages are:

  • When using a thick steel chain, it is almost impossible to bite it.
  • Low manufacturing cost (most materials are on the farm).
  • You can independently make a lock of any appearance and configuration. The owner can choose the color and size of the product himself. Therefore, each bike lock will be unique in its own way.

However, a self-made device has its drawbacks:

  • Building a castle takes time and effort.
  • The lock itself can be opened fairly quickly by a trained bicycle thief (this problem is solved by buying a more expensive and reliable lock, but in this case, the manufacturing costs will increase significantly). Therefore, it is still not recommended to leave the bike unattended for a long time.

Important! Another significant disadvantage of a homemade bike lock is its heavy weight. This problem can be partially solved by a competent selection of a chain and a padlock.

How to make a bike lock with your own hands

As the number of bicycles grows, so does the number of thefts. To keep their property safe, owners use bike locks. However, cheap models are not reliable, and buying more durable options can hit your hard. How to make a bicycle lock with your own hands will be discussed further.

Necessary materials

Before you start making a bike lock, you will need to stock up on some equipment and materials.


Making a bike lock with your own hands can be divided into several steps:

First step

If an old chain is used for manufacturing, it must be cleaned of rust. To do this, you can use white vinegar or a specialized solvent. However, the best effect is brought by the processing of metal with abrasives. After that, you can paint the extreme links (for a new chain this is not a prerequisite, but it is better to additionally process the old metal. this will prevent rusting and improve the appearance). Acrylic paint can be used here (it is advisable to choose a dye based on the metal).

Third step

Important! The most convenient way is to use a snap lock. The main thing is not to leave the key at home.

This completes the manufacture of the bicycle lock. Now you can put it to the test.

Best Cycle Chain Protection

Of course, a bicycle chain guard is considered a good protection against foreign objects. Protects it from breakdowns, and protects the rider from injury due to transmission breakdown. However, the shield cannot completely protect from the ingress of dirt and dust. That is why correct and timely maintenance is considered the best protection of the bike chain and transmission as a whole. Namely:

  • the use of high-quality, not very thick lubricants every 100-300 km;
  • selection of a lubricant that suits the season and weather conditions;
  • buying a good and high-quality bicycle chain with a large resource;
  • simultaneous use of three chains, which should be changed in a circle every 500-600 km;
  • careful use of gears, avoidance of distortions.
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Cycle chain protection from car tubing

One of the simplest and most effective methods to protect the bike chain from the ingress of gravel, sand and even items of clothing is to make a complete protection of the bike chain with your own hands from corrugated car tubing. It is commonly used for wiring in a car. The protection will spin together with the bicycle chain, thereby protecting it from foreign objects. In addition, the corrugation is quite resistant to deformation, temperature extremes, dense.

Important! This protection is more suitable for single speed bikes. The size of the driven sprocket must be at least 22 teeth. Tubing protection is suitable for walking style of riding and for trips with loads.

Protection helps to protect the bike chain from the ingress of gravel and sand

How to make your own bike chain protection

The chain is one of the most important elements of a bicycle. The bike chain transfers torque from the pedals to the rear wheels. When traveling, it is exposed to significant stress, wears out. A good bicycle chain when traveling on flat terrain (asphalt) on a single-speed bike can be enough for 2,500 km. Moving on gravel, sand or puddles significantly reduces its resource, every 5 times. Stones and dust get into it. All this deforms, damages the bike chain. Protecting your bike chain will help extend its lifespan.

Cycle chain protection extends its lifespan

Making a chain guard with your own hands is quite simple and practically inexpensive. However, only comprehensive protection: a flap or casing, timely maintenance, lubrication, adherence to basic maintenance rules will help protect the bike chain and the entire transmission from premature wear.

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As you ride, the bike chain stretches, begins to sag and fall off. To tighten it, you need a tensioner. We make a tensioner with our own hands from improvised means: a speed switch, a bicycle spoke and other materials.

Bike lock chain

Now you need to paint the extreme links of the chain. If you have a shiny new chain and you are happy with the color, then you can skip this step. I painted the outermost links with acrylic dark green paint. Can even be painted with simple nail polish. If the paint peels off over time, you can always touch up.

Making a bicycle lock with your own hands. paint the chain

How to make a reliable bike lock with your own hands

There are more and more bicycles on the roads. This is not surprising, since there are constant traffic jams in large cities, the for gasoline and transport fares are constantly growing. In this master class I will tell you how to easily and quickly make a reliable bike lock with your own hands.

Padlock for bike lock

First, the bow of the lock should not be narrower than the thickness of the links. Agree, why take a thick chain, and hang a lock on it with a narrow bow, which is easier to break than the chain itself. In this case, the thickness of the bow must be such that the bow freely fits into the hole in the link, otherwise you simply cannot connect the chain.

Second, the lock must be fastened without a key. It is not necessary, but it is much more convenient. just to snap, and not to close with a key. Just do not forget the key, but it is better to carry the lock buttoned so as not to accidentally fasten the bike, and then find that there is no key.

Bike lock fabric cover

As I wrote earlier, almost any thick fabric will do. It is advisable to use a fabric that breathes and evaporates moisture so that moisture does not accumulate inside the cover and the chain does not rust. If you are using knitwear, the cover can be sewn just as wide as the chain and a few centimeters shorter. Due to the stretching of the fabric, it will fit around the chain. In this case, the chain will ring less when driving. If you are using a fabric that does not stretch, then, on the contrary, you need to make the cover 1.5. 2 times wider than the chain, so that you can easily pull it on the chain, and so that the cover does not limit the flexibility of the chain.

After cutting the fabric out of the fabric, first trim the narrow side of the edge. You can simply roll up the fabric and sew. If the edge of the fabric does not fray, then it may not be processed. And, for example, in denim, the edge can be tousled on the contrary. it will be original and cool. Just sew the stitch anyway so that the fabric does not frizz further than it should be.

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After the narrow edge is finished, fold the fabric in half with the wrong side out and sew the two long edges together. You should get a sausage pipe. Turn it out and you have a great chain case. Now you just need to put it on the chain. Make bartacks in the center of the outermost chain links so that the cover does not slide forward or backward.

Our handmade bike lock is almost ready. It remains only to attach a padlock on it.

Original designer bicycle lock

Most importantly, your castle will be one and only. This will be your own handmade product. You can embroider the lock with rhinestones, make custom embroidery on it, sew strings or Velcro to attach it to the bike frame. you can endlessly fantasize.

I hope you enjoyed this simple master class on how to make a bicycle lock with your own hands.

Write in the Комментарии и мнения владельцев if you managed to make a bicycle lock, as well as your wishes, questions and additions to the article.

Simple DIY bicycle anti-theft lock

A bicycle anti-theft lock is usually a cable or chain with a lock at the end, with which the owner wraps around the spokes of the wheel, frame and element of the grill or parking lot for bicycles.

Theft of expensive bicycles, theft of wheels is a common phenomenon, and technically trained people are engaged in it. The chain or cable is silently cut with a bolt cutter, the bike is put into the car, the crime scene is abandoned. Only the bitten off anti-theft lock remains in place.

In the manufacture of a serial anti-theft lock, manufacturers put the following qualities at the forefront:

  • attractive appearance;
  • minimum weight;
  • Ease of use;
  • competitive cost of the finished product;
  • speed of use;
  • bite resistance.

How to make your own chain device

It is impossible to satisfy all the requirements at the same time, and in the end, it is even profitable for manufacturers to make devices that are easy to bite. They will buy new ones because they cannot be repaired. The owner of a stolen bicycle will have to strengthen security by purchasing an expensive, but no more bite-resistant lock.

There is no reception against scrap, but the capabilities of the bolt cutter are limited by its geometric parameters. Cutting through thin chain links, 4-5 mm thick, or rope up to 15 mm in diameter is no problem for the specialized bolt cutter.

It is not easy to bite a bolt with a diameter of 12-14 mm, with a strength class over 8.8, you will need an angle grinder, which is used much less often. A chain with a link thickness from 8 mm in diameter will weigh a couple of kilograms, which in some cases is unacceptable.

Unfortunately, the consumer demands that it be easy, clean, beautiful, fast, cheap, but not stolen. This is almost impossible to achieve. The specificity of fastening a bicycle to different structural elements of a post or lattice prompts the use of a chain or cable inside a rubber or plastic hose, or with a put on and crimped PVC heat shrinkable film. It is not difficult to make a semblance of a purchased product on your own in the presence of a lock, a chain and a decorative hose and the manufacturing measures are obvious.

Let’s try to execute another version of the anti-theft lock.

A chain or cable can be replaced by a metal strip 4-5 mm thick, 40-50 mm wide, one part of which is attached to the frame with an overlay, the other to an element of the concrete structure of a bicycle stand or a lattice.

The meaning of the design is to slip a thick and wide strip of metal or rather thick bolts under the bite. If the strip will have an articulated connection. like an element of a bicycle chain, then it can be folded like a folding ruler. The locking element can be made from a bolt, which can only be unscrewed with a special wrench. The L-shaped hex key is cut off, and the minimum possible 5-7 mm remain under the protective strip. To the bolt. do not crawl from the sides, only the L-shaped hexagon or the owner’s torx will fit under the pad. The nut on the reverse side of the strip is welded, compressed tightly. In the same way, the technical issue of crimping is solved on the other side of the collapsible anti-theft hardware.

You can make this product yourself. Having painted the details and resolved the issue of transport placement on the bike frame, you can reliably and aesthetically protect the bike from theft, and get a convenient and non-standard device.

Hijackers, people are cautious, and they simply won’t solve atypical tasks, it will be easier for them to find another bike with a regular chain